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C57BL/6JCya-Hspa1aem1flox/Cya
Common Name:
Hspa1a-flox
Product ID:
S-CKO-04684
Background:
C57BL/6JCya
Product Type
Age
Genotype
Sex
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Basic Information
Strain Name
Hspa1a-flox
Strain ID
CKOCMP-193740-Hspa1a-B6J-VA
Gene Name
Hspa1a
Product ID
S-CKO-04684
Gene Alias
Hsp70-3; Hsp70.3; Hsp72; hsp68; hsp70A1
Background
C57BL/6JCya
NCBI ID
193740
Modification
Conditional knockout
Chromosome
17
Phenotype
MGI:96244
Document
Click here to download >>
Application
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More
Rare Disease Data Center >>
Note
Note: When using this mouse strain in a publication, please cite “C57BL/6JCya-Hspa1aem1flox/Cya mice (Catalog S-CKO-04684) were purchased from Cyagen.”
Strain Description
Ensembl Number
ENSMUST00000087328
NCBI RefSeq
NM_010479
Target Region
Exon 1
Size of Effective Region
~4.1 kb
Detailed Document
Click here to download >>
Overview of Gene Research
Hspa1a, a member of the heat shock protein family A, is a molecular chaperone crucial for cell survival [6,7]. It functions in maintaining proteome integrity through allosteric regulation of substrate affinity in a nucleotide-dependent manner by its nucleotide-and substrate-binding domains [7]. Hspa1a has been associated with multiple cellular pathways and stress responses, and its abnormal expression is linked to various diseases. Genetic models, such as gene knockout models, are valuable for studying its functions.

In the context of different diseases, studies have shown significant roles of Hspa1a. In a KrasG12D-based genetically engineered murine model, knockdown of Hspa1a specifically inhibited the malignant progression of Arid2-deficient lung cancers, suggesting Hspa1a as a potential therapeutic target in ARID2-deficient lung adenocarcinomas [4]. In spinal cord injury models, Hspa1a overexpression promoted neurological function recovery, inhibited apoptosis and pyroptosis, and alleviated neuroinflammation. Inhibition of Hspa1a had the opposite effects, indicating its neuroprotective role through activation of the Wnt/β-catenin signaling pathway and inhibition of the MAPK signaling pathway [3,5]. In epidermal thermoresistance, Hspa1a protected cells from thermal stress by impeding ESCRT-0-mediated autophagic flux [1]. Also, in osteoblasts, METTL3-mediated m6A modification increased Hspa1a stability to inhibit osteoblast aging [2].

In summary, Hspa1a plays essential roles in protecting cells from stress, inhibiting cell death processes like apoptosis and pyroptosis, and is involved in disease-related cellular processes such as tumor progression and cell aging. Gene knockout and overexpression models in different disease contexts have been crucial in revealing these functions, providing insights into potential therapeutic strategies for conditions like spinal cord injury, lung adenocarcinoma, and senile osteoporosis.

References:
1. Wu, Shan, Pei, Qing, Ni, Wei, Dong, Jiying, Yao, Min. 2020. HSPA1A Protects Cells from Thermal Stress by Impeding ESCRT-0-Mediated Autophagic Flux in Epidermal Thermoresistance. In The Journal of investigative dermatology, 141, 48-58.e3. doi:10.1016/j.jid.2020.05.105. https://pubmed.ncbi.nlm.nih.gov/32533962/
2. Wang, Yaobin, Chen, Yi, Xiao, Hefang, Xia, Yayi, Geng, Bin. 2024. METTL3-mediated m6A modification increases Hspa1a stability to inhibit osteoblast aging. In Cell death discovery, 10, 155. doi:10.1038/s41420-024-01925-4. https://pubmed.ncbi.nlm.nih.gov/38538596/
3. He, Xuegang, Guo, Xudong, Deng, Bo, Yang, Yong, Kang, Xuewen. 2022. HSPA1A ameliorated spinal cord injury in rats by inhibiting apoptosis to exert neuroprotective effects. In Experimental neurology, 361, 114301. doi:10.1016/j.expneurol.2022.114301. https://pubmed.ncbi.nlm.nih.gov/36538982/
4. Wang, Xue, Wang, Yuetong, Fang, Zhaoyuan, Hu, Liang, Ji, Hongbin. 2021. Targeting HSPA1A in ARID2-deficient lung adenocarcinoma. In National science review, 8, nwab014. doi:10.1093/nsr/nwab014. https://pubmed.ncbi.nlm.nih.gov/34858604/
5. He, Xuegang, Deng, Bo, Zhang, Cangyu, Wang, Yonggang, Kang, Xuewen. 2025. HSPA1A inhibits pyroptosis and neuroinflammation after spinal cord injury via DUSP1 inhibition of the MAPK signaling pathway. In Molecular medicine (Cambridge, Mass.), 31, 53. doi:10.1186/s10020-025-01086-9. https://pubmed.ncbi.nlm.nih.gov/39924492/
6. Low, Jensen, Altman, Rachel, Badolian, Allen, Stahelin, Robert V, Nikolaidis, Nikolas. 2024. Heat-Induced Phosphatidylserine Changes Drive HSPA1A's Plasma Membrane Localization. In bioRxiv : the preprint server for biology, , . doi:10.1101/2024.12.02.626454. https://pubmed.ncbi.nlm.nih.gov/39713339/
7. Vandova, Veronika, Vankova, Pavla, Durech, Michal, Muller, Petr, Trcka, Filip. 2019. HSPA1A conformational mutants reveal a conserved structural unit in Hsp70 proteins. In Biochimica et biophysica acta. General subjects, 1864, 129458. doi:10.1016/j.bbagen.2019.129458. https://pubmed.ncbi.nlm.nih.gov/31676290/
Quality Control Standard
Sperm Test

Pre-cryopreservation: Measurement of sperm concentration, determination of sperm viability.

Post-cryopreservation: A vial of cryopreserved sperms is selected for in-vitro fertilization from each batch.

Environmental Standards:SPF
Available Region:Global
Source:Cyagen
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